Abidi, N. and Deroide, B. and Zanchetta, J.V. and Haddad, M. (1999) Interaction of manganese with interface sites in silica aerogels and partially densified aerogels. Physics and Chemistry of Glasses, 40 (4). pp. 193-198.

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Abstract

Silica aerogel and partially densified silica aerogels were doped with Mn 2+ in order to study by electron paramagnetic resonance the interaction of metal with the glassy network. Different methods were used for doping. EPR absorption is simulated with the sum of a sextet at g=2-001 ± 0.001 with a hyperfine splitting A=95±1 G and a broad line near g = 2.001. These spectra are sensitive to the densities of materials and water pressure. Results show that the paramagnetic probe interacts with the sample surface. EPR spectra, recorded during hydration of the samples, are also analysed.

Item Type: Article
Subjects: Chemistry
Divisions: SCIENTIFIC PRODUCTION > Chemistry
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:45
URI: http://eprints.umi.ac.ma/id/eprint/2089

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